--- /dev/null
+/*
+ * m_police.c Parse/print policing module options.
+ *
+ * This program is free software; you can u32istribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ *
+ * Authors: Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru>
+ * FIXES: 19990619 - J Hadi Salim (hadi@cyberus.ca)
+ * simple addattr packaging fix.
+ * 2002: J Hadi Salim - Add tc action extensions syntax
+ *
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <syslog.h>
+#include <fcntl.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+#include <string.h>
+
+#include "utils.h"
+#include "tc_util.h"
+
+struct action_util police_action_util = {
+ .id = "police",
+ .parse_aopt = act_parse_police,
+ .print_aopt = print_police,
+};
+
+static void explain(void)
+{
+ fprintf(stderr, "Usage: ... police rate BPS burst BYTES[/BYTES] [ mtu BYTES[/BYTES] ]\n");
+ fprintf(stderr, " [ peakrate BPS ] [ avrate BPS ]\n");
+ fprintf(stderr, " [ ACTIONTERM ]\n");
+ fprintf(stderr, "Old Syntax ACTIONTERM := action <EXCEEDACT>[/NOTEXCEEDACT] \n");
+ fprintf(stderr, "New Syntax ACTIONTERM := conform-exceed <EXCEEDACT>[/NOTEXCEEDACT] \n");
+ fprintf(stderr, "Where: *EXCEEDACT := pipe | ok | reclassify | drop | continue \n");
+ fprintf(stderr, "Where: pipe is only valid for new syntax \n");
+}
+
+static void explain1(char *arg)
+{
+ fprintf(stderr, "Illegal \"%s\"\n", arg);
+}
+
+#define usage() return(-1)
+
+
+char *police_action_n2a(int action, char *buf, int len)
+{
+ switch (action) {
+ case -1:
+ return "continue";
+ break;
+ case TC_POLICE_OK:
+ return "pass";
+ break;
+ case TC_POLICE_SHOT:
+ return "drop";
+ break;
+ case TC_POLICE_RECLASSIFY:
+ return "reclassify";
+ case TC_POLICE_PIPE:
+ return "pipe";
+ default:
+ snprintf(buf, len, "%d", action);
+ return buf;
+ }
+}
+
+int police_action_a2n(char *arg, int *result)
+{
+ int res;
+
+ if (matches(arg, "continue") == 0)
+ res = -1;
+ else if (matches(arg, "drop") == 0)
+ res = TC_POLICE_SHOT;
+ else if (matches(arg, "shot") == 0)
+ res = TC_POLICE_SHOT;
+ else if (matches(arg, "pass") == 0)
+ res = TC_POLICE_OK;
+ else if (strcmp(arg, "ok") == 0)
+ res = TC_POLICE_OK;
+ else if (matches(arg, "reclassify") == 0)
+ res = TC_POLICE_RECLASSIFY;
+ else if (matches(arg, "pipe") == 0)
+ res = TC_POLICE_PIPE;
+ else {
+ char dummy;
+ if (sscanf(arg, "%d%c", &res, &dummy) != 1)
+ return -1;
+ }
+ *result = res;
+ return 0;
+}
+
+
+int get_police_result(int *action, int *result, char *arg)
+{
+ char *p = strchr(arg, '/');
+
+ if (p)
+ *p = 0;
+
+ if (police_action_a2n(arg, action)) {
+ if (p)
+ *p = '/';
+ return -1;
+ }
+
+ if (p) {
+ *p = '/';
+ if (police_action_a2n(p+1, result))
+ return -1;
+ }
+ return 0;
+}
+
+
+int act_parse_police(struct action_util *a,int *argc_p, char ***argv_p, int tca_id, struct nlmsghdr *n)
+{
+ int argc = *argc_p;
+ char **argv = *argv_p;
+ int res = -1;
+ int ok=0;
+ struct tc_police p;
+ __u32 rtab[256];
+ __u32 ptab[256];
+ __u32 avrate = 0;
+ int presult = 0;
+ unsigned buffer=0, mtu=0, mpu=0;
+ int Rcell_log=-1, Pcell_log = -1;
+ struct rtattr *tail;
+
+ memset(&p, 0, sizeof(p));
+ p.action = TC_POLICE_RECLASSIFY;
+
+ if (a) /* new way of doing things */
+ NEXT_ARG();
+
+ if (argc <= 0)
+ return -1;
+
+ while (argc > 0) {
+
+ if (matches(*argv, "index") == 0) {
+ NEXT_ARG();
+ if (get_u32(&p.index, *argv, 10)) {
+ fprintf(stderr, "Illegal \"index\"\n");
+ return -1;
+ }
+ } else if (matches(*argv, "burst") == 0 ||
+ strcmp(*argv, "buffer") == 0 ||
+ strcmp(*argv, "maxburst") == 0) {
+ NEXT_ARG();
+ if (buffer) {
+ fprintf(stderr, "Double \"buffer/burst\" spec\n");
+ return -1;
+ }
+ if (get_size_and_cell(&buffer, &Rcell_log, *argv) < 0) {
+ explain1("buffer");
+ return -1;
+ }
+ } else if (strcmp(*argv, "mtu") == 0 ||
+ strcmp(*argv, "minburst") == 0) {
+ NEXT_ARG();
+ if (mtu) {
+ fprintf(stderr, "Double \"mtu/minburst\" spec\n");
+ return -1;
+ }
+ if (get_size_and_cell(&mtu, &Pcell_log, *argv) < 0) {
+ explain1("mtu");
+ return -1;
+ }
+ } else if (strcmp(*argv, "mpu") == 0) {
+ NEXT_ARG();
+ if (mpu) {
+ fprintf(stderr, "Double \"mpu\" spec\n");
+ return -1;
+ }
+ if (get_size(&mpu, *argv)) {
+ explain1("mpu");
+ return -1;
+ }
+ } else if (strcmp(*argv, "rate") == 0) {
+ NEXT_ARG();
+ if (p.rate.rate) {
+ fprintf(stderr, "Double \"rate\" spec\n");
+ return -1;
+ }
+ if (get_rate(&p.rate.rate, *argv)) {
+ explain1("rate");
+ return -1;
+ }
+ } else if (strcmp(*argv, "avrate") == 0) {
+ NEXT_ARG();
+ if (avrate) {
+ fprintf(stderr, "Double \"avrate\" spec\n");
+ return -1;
+ }
+ if (get_rate(&avrate, *argv)) {
+ explain1("avrate");
+ return -1;
+ }
+ } else if (matches(*argv, "peakrate") == 0) {
+ NEXT_ARG();
+ if (p.peakrate.rate) {
+ fprintf(stderr, "Double \"peakrate\" spec\n");
+ return -1;
+ }
+ if (get_rate(&p.peakrate.rate, *argv)) {
+ explain1("peakrate");
+ return -1;
+ }
+ } else if (matches(*argv, "reclassify") == 0) {
+ p.action = TC_POLICE_RECLASSIFY;
+ } else if (matches(*argv, "drop") == 0 ||
+ matches(*argv, "shot") == 0) {
+ p.action = TC_POLICE_SHOT;
+ } else if (matches(*argv, "continue") == 0) {
+ p.action = TC_POLICE_UNSPEC;
+ } else if (matches(*argv, "pass") == 0) {
+ p.action = TC_POLICE_OK;
+ } else if (matches(*argv, "pipe") == 0) {
+ p.action = TC_POLICE_PIPE;
+ } else if (strcmp(*argv, "conform-exceed") == 0) {
+ NEXT_ARG();
+ if (get_police_result(&p.action, &presult, *argv)) {
+ fprintf(stderr, "Illegal \"action\"\n");
+ return -1;
+ }
+ } else if (strcmp(*argv, "help") == 0) {
+ explain();
+ return -1;
+ } else {
+ break;
+ }
+ ok++;
+ argc--; argv++;
+ }
+
+ if (!ok)
+ return -1;
+
+ if (p.rate.rate && !buffer) {
+ fprintf(stderr, "\"burst\" requires \"rate\".\n");
+ return -1;
+ }
+ if (p.peakrate.rate) {
+ if (!p.rate.rate) {
+ fprintf(stderr, "\"peakrate\" requires \"rate\".\n");
+ return -1;
+ }
+ if (!mtu) {
+ fprintf(stderr, "\"mtu\" is required, if \"peakrate\" is requested.\n");
+ return -1;
+ }
+ }
+
+ if (p.rate.rate) {
+ if ((Rcell_log = tc_calc_rtable(p.rate.rate, rtab, Rcell_log, mtu, mpu)) < 0) {
+ fprintf(stderr, "TBF: failed to calculate rate table.\n");
+ return -1;
+ }
+ p.burst = tc_calc_xmittime(p.rate.rate, buffer);
+ p.rate.cell_log = Rcell_log;
+ p.rate.mpu = mpu;
+ }
+ p.mtu = mtu;
+ if (p.peakrate.rate) {
+ if ((Pcell_log = tc_calc_rtable(p.peakrate.rate, ptab, Pcell_log, mtu, mpu)) < 0) {
+ fprintf(stderr, "POLICE: failed to calculate peak rate table.\n");
+ return -1;
+ }
+ p.peakrate.cell_log = Pcell_log;
+ p.peakrate.mpu = mpu;
+ }
+
+ tail = NLMSG_TAIL(n);
+ addattr_l(n, MAX_MSG, tca_id, NULL, 0);
+ addattr_l(n, MAX_MSG, TCA_POLICE_TBF, &p, sizeof(p));
+ if (p.rate.rate)
+ addattr_l(n, MAX_MSG, TCA_POLICE_RATE, rtab, 1024);
+ if (p.peakrate.rate)
+ addattr_l(n, MAX_MSG, TCA_POLICE_PEAKRATE, ptab, 1024);
+ if (avrate)
+ addattr32(n, MAX_MSG, TCA_POLICE_AVRATE, avrate);
+ if (presult)
+ addattr32(n, MAX_MSG, TCA_POLICE_RESULT, presult);
+
+ tail->rta_len = (void *) NLMSG_TAIL(n) - (void *) tail;
+ res = 0;
+
+ *argc_p = argc;
+ *argv_p = argv;
+ return res;
+}
+
+int parse_police(int *argc_p, char ***argv_p, int tca_id, struct nlmsghdr *n)
+{
+ return act_parse_police(NULL,argc_p,argv_p,tca_id,n);
+}
+
+int
+print_police(struct action_util *a, FILE *f, struct rtattr *arg)
+{
+ SPRINT_BUF(b1);
+ struct tc_police *p;
+ struct rtattr *tb[TCA_POLICE_MAX+1];
+ unsigned buffer;
+
+ if (arg == NULL)
+ return 0;
+
+ parse_rtattr_nested(tb, TCA_POLICE_MAX, arg);
+
+ if (tb[TCA_POLICE_TBF] == NULL) {
+ fprintf(f, "[NULL police tbf]");
+ return 0;
+ }
+#ifndef STOOPID_8BYTE
+ if (RTA_PAYLOAD(tb[TCA_POLICE_TBF]) < sizeof(*p)) {
+ fprintf(f, "[truncated police tbf]");
+ return -1;
+ }
+#endif
+ p = RTA_DATA(tb[TCA_POLICE_TBF]);
+
+ fprintf(f, " police 0x%x ", p->index);
+ fprintf(f, "rate %s ", sprint_rate(p->rate.rate, b1));
+ buffer = ((double)p->rate.rate*tc_core_tick2usec(p->burst))/1000000;
+ fprintf(f, "burst %s ", sprint_size(buffer, b1));
+ fprintf(f, "mtu %s ", sprint_size(p->mtu, b1));
+ if (show_raw)
+ fprintf(f, "[%08x] ", p->burst);
+ if (p->peakrate.rate)
+ fprintf(f, "peakrate %s ", sprint_rate(p->peakrate.rate, b1));
+ if (tb[TCA_POLICE_AVRATE])
+ fprintf(f, "avrate %s ", sprint_rate(*(__u32*)RTA_DATA(tb[TCA_POLICE_AVRATE]), b1));
+ fprintf(f, "action %s", police_action_n2a(p->action, b1, sizeof(b1)));
+ if (tb[TCA_POLICE_RESULT]) {
+ fprintf(f, "/%s ", police_action_n2a(*(int*)RTA_DATA(tb[TCA_POLICE_RESULT]), b1, sizeof(b1)));
+ } else
+ fprintf(f, " ");
+ fprintf(f, "\nref %d bind %d\n",p->refcnt, p->bindcnt);
+
+ return 0;
+}
+
+int
+tc_print_police(FILE *f, struct rtattr *arg) {
+ return print_police(&police_action_util,f,arg);
+}
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